MOSFETs: Increased Efficiency In Bridge Rectifiers

AUTHOR(S)

Sevel, Billy

PUB. DATE

June 2007

SOURCE

EDN;6/7/2007, Vol. 52 Issue 12, Special section p21

SOURCE TYPE

Trade Publication

DOC. TYPE

Case Study

ABSTRACT

The article describes the case of increasing efficiency in bridge rectifiers. The metal oxide semiconductor field-effect transistors (MOSFET) approach could increase efficiency in many applications. Higher voltage FET like 60-100 volts used in a bridge rectifier circuit could significantly enhance power savings. Comparison of different approaches show that using the MOSFET approach results in over a half Watt of power savings, which is 98% more efficient that the standard diode bridge rectifier solution. Another potential application for the approach is reverse-polarity protection for a battery circuit. The MOSFET approach can be used as a flexible, inexpensive and efficient alternative to the bridge rectifier.

A new low-voltage floating gate MOSFET (FGMOS) based squarer using square law characteristic of the FGMOS is proposed in this paper. The major advantages of the squarer are simplicity, rail-to-rail input dynamic range, low total harmonic distortion, and low power consumption. The proposed...

We seek to motivate the use of two-port network circuit analysis techniques by proposing two examples: one is elementary, the other is advanced. In particular, we start by deriving the transmission matrices for small-signal equivalent models of the BJT and MOS transistors. We then proceed to the...

The article features the ALD114804/ ALD114804A and ALD114904A. These are n-channel matched-pair EPAD depletion-mode Metal Oxide Semiconductor Field-Effect Transistors(MOSFET) arrays offered in quad or dual versions and in PDIP or SOIC packages. These MOSFET arrays enable circuits to operate in...

The article deals with the integration of digital features into power circuits. Among the digital features are host communications, output-voltage/current programming, and fault diagnostics and management. Analog components and features include metal-oxide semiconductor field-effect transistor...

This work is about the analysis of dead time variation on switching losses in a Zero Voltage Switching (ZVS) synchronous buck converter (SBC) circuit. In high frequency converter circuits, switching losses are commonly linked with high and low side switches of SBC circuit. They are activated...